Ligand assay using interference modulation
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
May 29, 1991
filing date -
May 29, 1991
priority date (Note) -
Expired
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Abstract
An optical detection method for detecting specific ligands in an immunoassay is formed by diffracting a beam of light through slits formed in a mask and thererby forming an interference pattern. The diffracted light of one of the slits is distributed by an assay having a ligand which when reacted with anti-ligand changes the optical characteristics of the assay thereby changing the interference pattern in a concentration dependent manner.
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